diff --git a/package/postgresql/postgresql.mk b/package/postgresql/postgresql.mk
index 3630b5a385..d984235249 100644
--- a/package/postgresql/postgresql.mk
+++ b/package/postgresql/postgresql.mk
@@ -13,8 +13,6 @@ POSTGRESQL_INSTALL_STAGING = YES
 POSTGRESQL_CONFIG_SCRIPTS = pg_config
 POSTGRESQL_CONF_ENV = \
 	ac_cv_type_struct_sockaddr_in6=yes \
-	pgac_cv_snprintf_long_long_int_modifier="ll" \
-	pgac_cv_snprintf_size_t_support=yes \
 	LIBS=$(TARGET_NLS_LIBS)
 POSTGRESQL_CONF_OPTS = --disable-rpath
 POSTGRESQL_DEPENDENCIES = $(TARGET_NLS_DEPENDENCIES)